imspector: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/imspector - from package: imspector

You may install the required package with command apt-get install {package}
Error in other languages:
imspector: bevel nie gevind nie
imspector: comandă negăsită
imspector: comando não encontrado
imspector: commande introuvable
imspector: command not found
imspector: käsku ei ole
imspector: không tìm thấy lệnh
imspector: komanda nerasta
imspector: Kommando nicht gefunden.
imspector: kommandot finns inte
imspector: komut yok
imspector: nie znaleziono polecenia
imspector: níor aimsíodh an t-ordú
imspector: no se encontró la orden
imspector: no s'ha trobat l'ordre
imspector: opdracht niet gevonden
imspector: parancs nem található
imspector: perintah tidak ditemukan
imspector: príkaz nenájdený
imspector: příkaz nenalezen
imspector: команда не найдена
imspector: командата не е открита
imspector: 命令找不到
imspector: コマンドが見つかりません